Question

there is compelling evidence that todays mitochondria and chloroplasts were once primitive bacterial cells. this evidence is described in the endosymbiotic theory. symbiosis occurs when two different species benefit from living and working together. when one organism lives inside the other, its called endosymbiosis. in the 1960s, several scientists proposed that eukaryotic cells evolved when one bacterium (a prokaryote) engulfed another, and the two began living together. over many generations and through many more minor changes, the engulfed cell evolved into an organelle, like the mitochondrion. according to this idea, mitochondria look and act so much like bacteria because they once were bacteria. which statement below is not further evidence in support of the endosymbiosis theory? nuclear dna is bundled up in linear strands. mitochondria have their own circular dna genome. bacterial dna is capable of directing protein synthesis and enzyme production. mitochondria are more closely related to bacterial cells than the eukaryotic cells in which they reside.

Explanation:

The endosymbiotic theory suggests mitochondria were once bacteria. Bacterial DNA is circular, and mitochondria having circular DNA (second option) supports the theory. Bacterial DNA's ability to direct protein synthesis (third option) and mitochondria's closer relation to bacteria (fourth option) also support it. Nuclear DNA being linear (first option) is a feature of eukaryotes (not bacteria - like feature) and thus does not support the endosymbiosis theory.

Answer:

Nuclear DNA is bundled up in linear strands.